Step 1

Make a sugar rim on the glass by dipping the rim of the glass in a sauce of water. Spread the sugar on another saucer and dip the rim of the glass in the sugar.

Step 2

Place the basil leaves and cucumber in a cocktail shaker and muddle (or gently bash) with a muddler or wooden spoon until the basil and cucumber are bruised and the scent is released.

Step 3

Add the sugar syrup, gin, lemon juice and ice. Shake vigorously until frost forms on the outside of the cocktail shaker.

Step 4

Fill your glass with ice and strain the cocktail into the glass.

Step 5

Top up with tonic water. Decorate with strips of cucumber and basil leaves.